package com.woniuxy03;

import java.util.Scanner;

/**
 * @author 作者
 * @create 2025-06-04 16:31
 */
public class Test05 {
    public static void main(String[] args) {
        System.out.println(Integer.MAX_VALUE);
        System.out.println(Integer.MIN_VALUE);

        char c='X';
        System.out.println(c>='0' && c<='9' );
        System.out.println(c>='a' && c<='z' );
        System.out.println(c>='A' && c<='Z' );

        System.out.println(Character.isDigit(c));
        System.out.println(Character.isUpperCase(c));
        System.out.println(Character.isLowerCase(c));
    }
}
